package com.hadoop.nline;

import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;

import java.io.IOException;

/**
 * Created by yu756 on 2020/1/18 17:57
 */
public class NlineMapper extends Mapper<LongWritable, Text, Text, IntWritable> {

    Text k = new Text();
    IntWritable v = new IntWritable(1);

    @Override
    protected void map(LongWritable key, Text value, Context context) throws IOException, InterruptedException {

        String[] worlds = value.toString().split(" ");
        for (String world : worlds) {
            k.set(world);

            context.write(k, v);
        }


    }
}
